Electric switch



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JYTMNEY a at Hartford, in the till:

- C. STIREIE'G, F HARTEGRD, CONNECTICUT.

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Be it known that I, CLARENCE C. STIR- LING, a citizen of the United States, residing county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Switches of which the following is a specification.

This invention relates to electric switches. While it is possiblethat some if not all the features of the invention may be incorporated in switches of various kinds, they'are of particular utility when embodied in one of the pull or ceiling type. i have a number of motives in view among the principal being the provision of a switch of the character set forth which can be easily and quickly mounted and which is effective in action.

In the drawings accompanying and forming part of the present specification, have shown in detail one of the many forms of embodiment of the invention whicl i to enable those skilled in the art to practice the same will be set forth fully in the following description, the novelty of the invention bej lug included in the claims succeeding such description. ll am not restricted tothis disclosure. IYmay depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figures 1, 2 and 3 are face views with the casing removed.

Fig. 4c is an elevation with the casing in vertical section as seen practically from the lower left side for instance of Fig. 1.

Fig. 5 is a view as seen from the bottom for instance in Fig. 1.

Like characters refer to like throughout theseveral views.

The device includes in its organization a supporting body of some suitable con struction, the disk 2 of insulating material answering my requirements in this respect. @n the supporting body or disk are sustained certain operative parts which are generally housed and for this purpose the casing or cap 3 generally of sheet metal, may be provided, the cap or casing ordinarily closely fitting the body or disk 2. The casingor cap in turn has a circumferential flange 4 perforated to receive screws or similar fastenings by which the switch may bemounted.

parts Specification of Letters Patent.

Patented July is, race.

Anplication filed September 30,1920. Serial No. 413,808.

The switch naturally involves in its construction a circuit-controlling or switching member the lever 5 answering satisfactorily in this connection and being perforated near one end to receive a pivot .or stud 6 by which it may be given the necessary rocking movement. The said circuit-controlling or switchingmember is shown as having near its center of motion the notch or recess 7. in Fig. 1 this notch is practically centrally intersected by a transverse line extending through the center of motion of the switching member. The ends of the notch or recess constitute stops for an operating device such for instance as a spring plunger hereinafter described, these stops or arresting, faces 8 and 9- being at equal distances of course form the transverse line to which I have already referred. Through the body or disk 52 extend terminals 10 and ll equipped on their outer ends as shown with nuts 12 by which the skinned ends of wires 13 are electrically connected to the respective terminals. The pivot or stud 6 to which I have referred, constitutes a continuation of the inner "terminal 10. being obviously in constant electrical connection with the switching member 5. lhere is connected with the outer terminal 11 the'clip I l. The free end of the switching member 5 is shown as being between the branches of the clip 14 in Fig, l for instance. lVhen this relation. is present the switch will be on. When the switching member is from between the branches of the clip as shown for efrarnpiein Figs. 2 and 3, the switching member will be elf.

The actuator for the switching member, although in the present case it does not. operate directly, against the same as shown, is in the form of a lever 15 pivoted at 16 to the body or dish 2 in proximity to the in nor end of the lever the pivot pin 16 extending through an enlarged opening or hole 1? practically centrally of the switching member 5, the pin or pivot lti heing adapted to engage opposite sides of the wall of the opening or hole 17 to thus limit the swing of the switching member. in the present case the switching member has I will hereinafter more particularlypoint out, is moved from on (Fig. l) to 0% (Fig. 2), by a downward pull on the actuator or level" 15 limited in its movements by suitable stops in the form of pins 18- connected with the body or dish.

' the fixed pivot 16.

In Fig.1 the outer portion of the lever is against the upper of these two pins or stops while in Fig. 2 it is abuttedagainst the lower one of them. The lever 15 may be manually'operated in various ways, generally by a cord or chain 19 connected to the free end thereof which is shown at the right in Figs. 1, 2 and 3. To effect the retractive or backward movement of the actuator or lever a spring as 20 may be provided, this spring being shown-as of V -form, .one of its branches being fitted around the. outer terminal 11 while the opposite branch thereof acts against the stud 21 rigid with the lever 15 between the ends thereof, the spring where its branches unite being coiled about When therefore the lever is pulled down'in the manner to which I have referred, the upper branch of this spring is moved toward the complemental branch thereby better conditioning the spring when the cord or chain is released to impart an opposite movement to the lever 15. I

The notchor recess 7 receives as shown ble in a bore. or socket 23 in the rocking sleeve 24jpivotallysupported at 24' between its ends by the body or disk 2, the, pin or stud 22 being engageable in its back by the coiled springv 25 the rear end ofwhich bears against the rear wall of the socket or bore 23, the springtending therefore to constantly advance the pin or stud 21.

A controllin membersuch as the cam 26 the shank of w ich is rigidly fastened to the rear portion of the lever 5 co-operates as I will later explainwith the sleeve 24. The

controlling member or cam 26 has a T or cross head 27 the under inner sides of which have notches 28 and 29 which co-operate with pins or projections as 30 and 31 on the,

rockin sleeve 24.

vAs s own in Fig. 1 the switch is in the on relation. It will be assumed that it is desired to secure the open circuit condition. In this event the following procedure will be adopted. The outer end of the lever 15 will be pulled down. This will carry the left branch of the cross head 27 downward so that the pin 30 will be caused to enter thenotch 28,, this relation ensuing after the lever has been advanced a short distance. On the further down motion of the lever, the rounded operative end of the pin or stud 22 will traverse the" bottom of the notch or recess 7 thus causing the backward movement of the spring actuated pin 22 and as a consequence. condensing or "compressing the spring 25, this motion continuing until the rounded forward end of the pin 22 crosses the center of the bottom of the notch or recess 7 at which point the spring 25 will be released so that the spring 25,'by reaction can continue the movement and as a consequence snap the switching member to the oil position as shown for instance in Fig. 2. As soon as the actuator or lever 15 is released, its spring 20 returns it to the original position against the upper of the two stops 18 the oscillating or rocking sleeve 24 being left in shifted position. As the lever 15 rises the cam 26 Will'be carried therewith so that' down pull opens the circuit. The up movement of the lever 15 sets the parts for the next down pull.

It will be clear from the foregoing description, that I provide a T-shaped lever which has an oscillator) cam as 26. The cam encounters abutments such as pins 30 and 31 on an oscillating lever such as 24 which as shown is in the form of a sleeve. Each of these abutments or pins owing to the engagement of thecam therewith .moves the oscillating cam lever into position to engage the other of the abutments or pins so that on the stroke of an actuator as 15, the switch will be 0 erated.

What claim is: y 1. An electric switch comprising aswitching member, an actuator, a rockin member, a spring actuated pin carried b the rocking member and co-operative witi the switching member, the actuator having a part and also having means to cause said part to operate the rocking member successiv'elyin opposite directions on successive movements of the actuator, the rocking member on said successive movements of the actuator causing the pin to shift the switching member successively between on and olf ositions.

2. 11 electric switch comprising a switching member, an actuator. a rocking member, a spring actuated pin carried by the rocking member and co-operative with the switching member, the actuator having a part and also having cam.means to cause said part to operate the rocking member successively in opposite directions on successive movements of the actuator, the rocking member on said successive movements of the actuator caus ed by the axis of motion oft-he switching member,- the end walls of the notch consti tuting stops, an actuator, a rocking member, a spring actuated carried by therockbetween. on and oil posi-'.

ing member and adapted to traverse the bottom of the notch, the actuator having .a part and also havin means to cause said part to operate the roc ing member successively in opposite directions on successive movements of the actuator, said rocking member on said movements of the actuator causing the pin to shift the switchin member successively between on and 0 positions.

4. An electric switch comprising a switching member, an oscillatory actuator, a rocking member, a spring actuated pin movable with the rocking member and co-operative with the switching member, the actuator having a part and also having means to cause said part to operate the rocking member successively in opposite directions on successive movements of the actuator in the same direction, the rocking member on said successive movements of the actuator causing the pin to shift the switching member successively between on and off positions.

5. An electric switch comprising aswitching member, an actuator, a rocking member. a spring actuated pin movable with the rocking member having pins at opposite sides of its center of motion, the actuator having a head and also having means for causing said head to alternately engage said pins to thus cause successive movements of the rocking member alternately in opposite directions on successive movements of the actuator, the spring. actuated pin on such movements successively moving the switching member between on and cit posiv opposite sides of the switching member on successive movements of the actuator, the actuator having a head, the rocking member having pins at opposite sides of the center actuator, and thereby cause the rocking.

member to be successively rocked and thus cause the pin to successively move the switching member between on and oif? positions.

7; An electric switch comprising an oscillatory switching member, an oscillatory actuator, a rocking member provided with means for shifting the switching member, the rocking member having two abutments, and an actuating lever furnished with a cam and head, the cam on each motion of the actuating lever being engaged by an abutment to move said head into engagement with the other abutment.

8. An electric switch comprising an oscillatory switching member, an oscillatory actuator, a rocking member provided with means for shifting the switching member, the rocking member having two abutments, and an actuating lever furnished with a cam and with a head, the cam on each motion of the actuatino lever engaging an abutment to move said head into position to engage the other abutment.

9. An electric switch comprising an oscillatory switching member, an oscillatory actuator, a rocking member provided with means for shifting the switching member, the rocking member having pins at opposite sides of its center of motion, an actuating lever furnished with a cam and with a head. the cam on each motion of the actuatin lever after the rocking member has been shlfted, engaging a pin to move the head into position to engage the other pin.

In testimony whereof I aihx my signature.

CLARENCE C. STIRLING. Witnesses:

ELsna MQRABENSTEIN, HEATH SUTHERLAND. 

